chi_angles_atoms

The name of the atomic group that determines the side chain torsion angle in amino acids. Each amino acid has a maximum of four side chain torsion angles, among which ALA and GLY have no side chain torsion angle. Each torsion angle is determined by the position of 4 atomic groups (Dihedral Angle).

key

value

ALA

[]

ARG

[[‘N’, ‘CA’, ‘CB’, ‘CG’], [‘CA’, ‘CB’, ‘CG’, ‘CD’], [‘CB’, ‘CG’, ‘CD’, ‘NE’], [‘CG’, ‘CD’, ‘NE’, ‘CZ’]]

ASN

[[‘N’, ‘CA’, ‘CB’, ‘CG’], [‘CA’, ‘CB’, ‘CG’, ‘OD1’]]

ASP

[[‘N’, ‘CA’, ‘CB’, ‘CG’], [‘CA’, ‘CB’, ‘CG’, ‘OD1’]]

CYS

[[‘N’, ‘CA’, ‘CB’, ‘SG’]]

GLN

[[‘N’, ‘CA’, ‘CB’, ‘CG’], [‘CA’, ‘CB’, ‘CG’, ‘CD’], [‘CB’, ‘CG’, ‘CD’, ‘OE1’]]

GLU

[[‘N’, ‘CA’, ‘CB’, ‘CG’], [‘CA’, ‘CB’, ‘CG’, ‘CD’], [‘CB’, ‘CG’, ‘CD’, ‘OE1’]]

GLY

[]

HIS

[[‘N’, ‘CA’, ‘CB’, ‘CG’], [‘CA’, ‘CB’, ‘CG’, ‘ND1’]]

ILE

[[‘N’, ‘CA’, ‘CB’, ‘CG1’], [‘CA’, ‘CB’, ‘CG1’, ‘CD1’]]

LEU

[[‘N’, ‘CA’, ‘CB’, ‘CG’], [‘CA’, ‘CB’, ‘CG’, ‘CD1’]]

LYS

[[‘N’, ‘CA’, ‘CB’, ‘CG’], [‘CA’, ‘CB’, ‘CG’, ‘CD’], [‘CB’, ‘CG’, ‘CD’, ‘CE’], [‘CG’, ‘CD’, ‘CE’, ‘NZ’]]

MET

[[‘N’, ‘CA’, ‘CB’, ‘CG’], [‘CA’, ‘CB’, ‘CG’, ‘SD’], [‘CB’, ‘CG’, ‘SD’, ‘CE’]]

PHE

[[‘N’, ‘CA’, ‘CB’, ‘CG’], [‘CA’, ‘CB’, ‘CG’, ‘CD1’]]

PRO

[[‘N’, ‘CA’, ‘CB’, ‘CG’], [‘CA’, ‘CB’, ‘CG’, ‘CD’]]

SER

[[‘N’, ‘CA’, ‘CB’, ‘OG’]]

THR

[[‘N’, ‘CA’, ‘CB’, ‘OG1’]]

TRP

[[‘N’, ‘CA’, ‘CB’, ‘CG’], [‘CA’, ‘CB’, ‘CG’, ‘CD1’]]

TYR

[[‘N’, ‘CA’, ‘CB’, ‘CG’], [‘CA’, ‘CB’, ‘CG’, ‘CD1’]]

VAL

[[‘N’, ‘CA’, ‘CB’, ‘CG1’]]